/
update.go
241 lines (223 loc) · 6.24 KB
/
update.go
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package cmd
import (
"archive/tar"
"archive/zip"
"bytes"
"compress/gzip"
"context"
"errors"
"fmt"
"io"
"net/http"
"os"
"runtime"
"strings"
"time"
"github.com/Masterminds/semver"
"github.com/charmbracelet/glamour"
"github.com/cheggaaa/pb/v3"
"github.com/google/go-github/v50/github"
"github.com/minio/selfupdate"
"github.com/spf13/cobra"
)
type (
AssetId int
AssetFormat uint
)
const (
Zip AssetFormat = iota
Tar
)
var (
Oraganisation = "one2nc"
ToolName = "cloudlens"
extIfFound = ".exe"
HideProgressBar = false
HideReleaseNotes = false
DownloadUpdateTimeout = time.Duration(30) * time.Second
httpClient = &http.Client{
Timeout: DownloadUpdateTimeout,
}
githubClient = github.NewClient(httpClient)
)
func updateCmd() *cobra.Command {
updateCmd := &cobra.Command{
Use: "update",
Short: "Updates cloudlens to the latest version",
Run: func(cmd *cobra.Command, args []string) {
if err := doUpdate(); err != nil {
fmt.Printf("%v\n", err.Error())
}
},
}
return updateCmd
}
func doUpdate() error {
latest, _, err := githubClient.Repositories.GetLatestRelease(context.Background(), Oraganisation, ToolName)
if err != nil {
return err
}
latestVersion, err := semver.NewVersion(latest.GetTagName())
if err != nil {
return fmt.Errorf("[ERROR] failed to parse semversion from tagname `%v` got %v", latest.GetTagName(), err)
}
currentVersion, err := semver.NewVersion(version)
if err != nil {
return fmt.Errorf("[ERROR] failed to parse semversion from current version %v got %v", version, err)
}
if !latestVersion.GreaterThan(currentVersion) {
return fmt.Errorf("%v is already updated to latest version", ToolName)
}
assetId, format, err := getAssetIDAndFormatFromRelease(latest)
if err != nil {
return err
}
bin, err := getExecutableFromAsset(assetId, format)
if err != nil {
return fmt.Errorf("[ERROR] executable %v not found in release asset `%v` got: %v", ToolName, assetId, err)
}
updateOpts := selfupdate.Options{}
if err = selfupdate.Apply(bytes.NewBuffer(bin), updateOpts); err != nil {
fmt.Printf("Error] update of %v %v -> %v failed, rolling back update\n", ToolName, currentVersion.String(), latestVersion.String())
if err := selfupdate.RollbackError(err); err != nil {
fmt.Printf("rollback of update of %v failed got %v,pls reinstall %v\n", ToolName, err, ToolName)
}
os.Exit(0)
}
fmt.Printf("%v sucessfully updated %v -> %v (latest)\n", ToolName, currentVersion.String(), latestVersion.String())
if !HideReleaseNotes {
output := latest.GetBody()
if rendered, err := glamour.Render(output, "dark"); err == nil {
output = rendered
} else {
fmt.Printf("[Error] %v\n", err.Error())
}
fmt.Printf("%v\n\n", output)
}
os.Exit(0)
return err
}
// getAssetIDAndFormatFromRelease finds AssetID and formatfrom release or returns a descriptive error
func getAssetIDAndFormatFromRelease(latest *github.RepositoryRelease) (AssetId, AssetFormat, error) {
builder := &strings.Builder{}
builder.WriteString("cloudlens")
builder.WriteString("_")
builder.WriteString(strings.TrimPrefix(latest.GetTagName(), "v"))
builder.WriteString("_")
if strings.EqualFold(runtime.GOOS, "darwin") {
builder.WriteString("darwin_all")
} else {
builder.WriteString(runtime.GOOS)
builder.WriteString("_")
builder.WriteString(runtime.GOARCH)
}
var assetId AssetId
var format AssetFormat
loop:
for _, v := range latest.Assets {
asset := *v.Name
switch {
case strings.Contains(asset, ".zip"):
if strings.EqualFold(asset, builder.String()+".zip") {
assetId = AssetId(*v.ID)
format = Zip
break loop
}
case strings.Contains(asset, ".tar.gz"):
if strings.EqualFold(asset, builder.String()+".tar.gz") {
assetId = AssetId(*v.ID)
format = Tar
break loop
}
}
}
builder.Reset()
if assetId == 0 {
return assetId, format, fmt.Errorf("%v", "Asset not found!")
}
return assetId, format, nil
}
func getExecutableFromAsset(assetId AssetId, format AssetFormat) ([]byte, error) {
buff, err := downloadAssetFromID(assetId)
if err != nil {
return nil, err
}
if format == Zip {
zipReader, err := zip.NewReader(bytes.NewReader(buff.Bytes()), int64(buff.Len()))
if err != nil {
return nil, err
}
for _, f := range zipReader.File {
if !strings.EqualFold(strings.TrimSuffix(f.Name, extIfFound), ToolName) {
continue
}
fileInArchive, err := f.Open()
if err != nil {
return nil, err
}
bin, err := io.ReadAll(fileInArchive)
if err != nil {
return nil, err
}
_ = fileInArchive.Close()
return bin, nil
}
} else if format == Tar {
gzipReader, err := gzip.NewReader(buff)
if err != nil {
return nil, err
}
tarReader := tar.NewReader(gzipReader)
// iterate through the files in the archive
for {
header, err := tarReader.Next()
if err == io.EOF {
break
}
if err != nil {
return nil, err
}
if !strings.EqualFold(strings.TrimSuffix(header.FileInfo().Name(), extIfFound), ToolName) {
continue
}
// if the file is not a directory, extract it
if !header.FileInfo().IsDir() {
bin, err := io.ReadAll(tarReader)
if err != nil {
return nil, err
}
return bin, nil
}
}
}
return nil, fmt.Errorf("executable not found in archive")
}
// downloadAssetFromID downloads and returns a buffer or a descriptive error
func downloadAssetFromID(assetId AssetId) (*bytes.Buffer, error) {
_, rdurl, err := githubClient.Repositories.DownloadReleaseAsset(context.Background(), Oraganisation, ToolName, int64(assetId), nil)
if err != nil {
return nil, err
}
resp, err := httpClient.Get(rdurl)
if err != nil {
return nil, fmt.Errorf("%v: failed to downlaod asset", err)
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("something went wrong got %v while downloading asset, expected status 200", resp.StatusCode)
}
if resp.Body == nil {
return nil, errors.New("something went wrong got response without body")
}
defer resp.Body.Close()
if !HideProgressBar {
bar := pb.New64(resp.ContentLength).SetMaxWidth(100)
bar.Start()
resp.Body = bar.NewProxyReader(resp.Body)
defer bar.Finish()
}
bin, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("%v :failed to read response body", err)
}
return bytes.NewBuffer(bin), nil
}